What is G.H.A.®
G.H.A.® is the most recent and innovative technology regarding Hard Anodising Aluminum Treatment, that involves Silver ions (Ag+) on a metal-ceramic surface. G.H.A.® treatment is a special Hard Anodization feasible on every aluminium part. The presence of Silver grants to G.H.A.® treatment a high resistance to corrosion and abrasive wear, plus a 100% antimicrobial and anti-static effect. Moreover G.H.A.® treatment is compliant with all major food and pharma regulations in force.
A little bit more about Special Hard Anodization
The market is taking more interest in natural solutions to combat bacteria, virus, mold and fungus; few technologies nowadays use silver ions to guarantee top hygiene standards, but thanks to the combination of the biotechnological properties of Hard anodizing and of Silver ions Ag+, G.H.A.® treatment provides the surface with a much longer life-span.
Aluminium become Aluminox
Engineers are looking forward to finding a light metal having a specific weight of about 65% less than steel, having better resistance to corrosion than stainless steel, having a better abrasive wear resistance than hardened steel and, why not, having antibacterial properties.
If such a material would be available, it will drastically improve all the projects involving automotive components, automatic packaging machines (food, pharma, etc.), nautical industry, household appliances, kitchen components and components for industrial equipments.
As a matter of fact a drastic weight reduction without giving up a good mechanical solidity, it means to reduce energy consumption and inertial phenomena for all the in motion components. It also means a considerable cost reduction in purchasing and manufacturing, when using aluminum instead of stainless steel.
Well, such an extraordinary and innovative material has been recently developed and it consists of aluminum-based alloys with G.H.A.® treatment.
Why G.H.A.®
G.H.A.® treated aluminium often represents a valid alternative to stainless steel and titanium because:
- is approximately three and two times lighter respectively;
- cost less because of cheaper raw material;
- aluminium allows for easier and faster mechanical machining;
- permits energetic savings (aluminium production, recycling and lightness).
G.H.A.® is a valid alternative also to more expensive coatings as TIN, PVD, CVD, Hard Chrome, Electroless Nickel, Nickel-Teflon, etc..
Please notice, G.H.A.® treatment is also very interesting from an economic point of view, because it uses the silver, an expensive metal, in its atomic condition that is small a homogeneously distributable. The silver ion is very reactive and it gives the outstanding properties listed in this page.
Summary of the biological properties:
- Anti-bacteria
- Anti-mold and anti-mildew
- Anti-mite
- Anti-fungus
- Anti-alga
- Anti-virus
- Anti-parasite
Summary of the biological benefits:
- Purifies water
- Purifies air
- Stimulates natural defenses
- Natural remedy
- Non-allergenic – Nickel free
- Non-chemicals products needed
- NO Antibiotic resistance
- Multipathogen effect (Antibiotic just for a virus at time)
Biotechnological properties:
| Material | Hardness HV | Melting temperature °C | Coefficient of friction | Antimicrobial capacity | Corrosion resistance SST | Wear resistance | Machinability |
|---|---|---|---|---|---|---|---|
| Aluminium alloy | 70÷100 | 680°C | 0.44 | None | 100 Hours | 100 Hours | Very High |
| Aluminium oxide G.H.A.® treated | 500÷550 | 2100°C | 0.025 | Very High | 10.000 Hours | 100.000 Hours | High, thanks to the aluminium base |
| Hard anodizing | 500÷550 | 2100°C | 0.15 | None | 200÷500 Hours | 10.000 Hours | High, thanks to the aluminium base |
| Stainless steel | 150÷1150 | 1400÷1500°C | 0.57 | None | 1.000 Hours | 1.000 Hours | Very Low |
| Titanium | 300÷400 | 1700°C | 0.32 | None | 5.000 Hours | 1.000 Hours | Very very Low |
Certification of G.H.A.® Special Hard Anodizing
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G.H.A.® 4.0 Plant in Italy
